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Radeon R7 250 vs Radeon R9 M385X

Intro

The Radeon R7 250 comes with clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 24 Texture Address Units and 8 Rasterization Operator Units.

Compare all that to the Radeon R9 M385X, which uses a 28 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 RAM runs at a frequency of 1500 MHz on this model. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M385X is 30% faster than the Radeon R7 250 in general, due to its greater bandwidth. (explain)

Radeon R9 M385X 96000 MB/sec
Radeon R7 250 73600 MB/sec
Difference: 22400 (30%)

Texel Rate

The Radeon R9 M385X will be much (about 157%) better at texture filtering than the Radeon R7 250. (explain)

Radeon R9 M385X 61600 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 37600 (157%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 M385X is the winner, and very much so. (explain)

Radeon R9 M385X 17600 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 9600 (120%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon R7 250

Amazon.com

Check prices at:

Radeon R9 M385X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R7 250 Radeon R9 M385X
Manufacturer AMD AMD
Year October 2013 2015
Code Name Oland XT Bonaire
Memory 1024 MB 4096 MB
Core Speed 1000 MHz 1100 MHz
Memory Speed 4600 MHz 6000 MHz
Power (Max TDP) 65 watts (Unknown) watts
Bandwidth 73600 MB/sec 96000 MB/sec
Texel Rate 24000 Mtexels/sec 61600 Mtexels/sec
Pixel Rate 8000 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 384 896
Texture Mapping Units 24 56
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1040 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon R7 250

Amazon.com

Check prices at:

Radeon R9 M385X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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